Means for automatically regulating the blast components of producers.



H. T. NEWELL.

MEANS FOR AUTOMATI CALEY REGULATING THE BLAST COMPONENTS OF PRODUCERS.

APPLICATION FILED JULY I9, I91].

1 26?,4fi3 a Patented. May 28, 1918..

614 1 01 new can arenas HUGH T. NEWELL, F IITTSBURGH, PENNSYLVANIA, ASSIGNOR T0 CHOWNING REGTL LATOR COBPQRATION, 0F ELMLRA. NEW YORK, A COBZ URATION' OF NEW YORK.

MEANS FQR AUTOMATICALLY REGULA'IING THE BLAST COMPONENTS OF PRODUCERS.

Specification of Letters Patent.

Farented May 28, 1191 Q.

Application filed July 19, 1:317. Serial No. 181,587.

To all whom it may concern: Be it known that I, HUoI-r T. NEWELL, a citizen of the United States of America, and a resident of Pittsburgh, Pennsylvania, have invented certain new and useful Improvements in Means for Automatically Regulat ing the Blast Components of Producers,,of which the following is a specification.

It has been heretofore proposed to maintain a constancy of the relative proportions of steam and air fed to gas producers by means of blast nozzles so constructed that within the range of the pressures of steam with which they are to be fed, such proportions in the blast will remain substantially fixed and constant. It has also been proposed to obtain the same constancy of proportion of air and steam in the blast by valves in the steam and air inlets to a nozzle which, in itself, is not self-regulating as n the previous case. In orderto vary automatically the total blast with the demand upon the producer, 1t has been further proposed that the pressure under which the steam is admitted-to the injector in the first case, and the valves controllin the admission of steam and air in the secon case, shall be controlled by the pressure existing at the outlet side of the producer, so that the blast will be automatically decreased as the demands on the producer fall, and at the same time, the proportion of air and steam in the blast shall remain constant. I propose to maintain this constancy of steam and air in the blast, and to regulate the amount of the blast automatically by a new construction which permits the use of higher pressures in the blast than are obtainable in the schemes before referred to, permits amore rigorous and exact regulation, and a wider variation in proportion ofsteam and air than is possible by such schemes.

To this end I propose to feed the air to the producer under a positive pressure created by an airpump, the deliverypf air from which is controlled by the speed of the pump, which in turn, is controlled by the pressure in the gas-main, and to also control by the pressure in the gas-mains, a valve in the steam line fed from a source of constant steam pressure, so that the feed of the air and steam to the blast will be dependent, the one upon the speed of the fan, and the other upon the drop in pressure caused by the steam control valve. My invention therefore consists in the construction, combination and arrangement of the several parts of which it is composed, as will be hereinafter more fully described and claimed.

Referring to the accompanying drawing which is an elevation of a producer equipped with my invention, and in which correspond mg parts are designated by corresponding marks of reference.- Y

The producer 1 may be of any approved construction, and is fed tlirough the blastpipe 2, the resultant gases being led from the producer through the aS-main 3. The blast pipe is fed by a suita le' air pump i shownas a centrifugal blower driven, by a variable speed motor 5. A suitable steam jet 6 is led into the air blast, and is connected with a suitable source 7 of steam under substantially constant pressure. The regulator 8 is preferably of the construction shown in the prior patent to Chowning, 1,066,252, of July 1, 1912, in which the position of the lever 9 is controlled by the pressure in the gasanain 8. This'lever 9 is connected by the linkage 10 with a valve 11 interposed betwee the source of constant steam pressure 7 and the steam jet '6, whereby such valve will'be closed as the gas pressure in the main 3 increases, The lever 9 is also connected by the link 12 with the arm 13 of a controller 1% in such a manner that as the gas pressure in creases in the main. the controller will act todecrease the speed of the motor 5. Thus as the gas pressure falls in the main, due to increased consumption or otherwise, addi tional steam will be admitted to the jet 6 and additional air will be supplied by the blower" 4; to urge the gasilication in the producer, and to build up the gas pressure. By properly selecting proper constants for the motor, and the valves the constancy proportions of steam and air under these conditions-can: be assured.

Having thus described by invention what I claim, and desire to secure by Letters ?atout is,'-- I In an apparatus for'sec ring constancy in the proportions of steam and air forming the blast of a producer, and for automaticallv controlling the combined blast inaccon ance with the demand upon the pro ducer, the combination with an air blast ining air thereto, and a steam jet supplying .steam thereto, of means for varying the speed of rotation of the blower, a valve for controlling the pressure of the steam supplied to the steam jet, and means aotuated by a variation in the pressure of the outlet side i of the producer for controlling the speed of the said motor, and the position of the said valve.

In testimony whereof I have slgned my name,

HUGH '1. NEWEL'L Tn the presence 0f- (I. \V. SYPNIEWSKI. 

